/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 22:27:02,245 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 22:27:02,318 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 22:27:02,322 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 22:27:02,323 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 22:27:02,362 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 22:27:02,363 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 22:27:02,363 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 22:27:02,364 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 22:27:02,364 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 22:27:02,364 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 22:27:02,365 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 22:27:02,365 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 22:27:02,365 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 22:27:02,366 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 22:27:02,366 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 22:27:02,366 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 22:27:02,367 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 22:27:02,367 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 22:27:02,367 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 22:27:02,368 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 22:27:02,373 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 22:27:02,374 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 22:27:02,374 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 22:27:02,378 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 22:27:02,378 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 22:27:02,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 22:27:02,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:27:02,379 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 22:27:02,379 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 22:27:02,380 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 22:27:02,380 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 22:27:02,381 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 22:27:02,381 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 22:27:02,381 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 22:27:02,381 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 22:27:02,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 22:27:02,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 22:27:02,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 22:27:02,735 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 22:27:02,735 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 22:27:02,736 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2023-08-26 22:27:03,947 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 22:27:04,227 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 22:27:04,228 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2023-08-26 22:27:04,242 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc2041802/d5cb6d5bc5744f05a1efadb32b81dedd/FLAGd2ed8c0e8 [2023-08-26 22:27:04,254 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc2041802/d5cb6d5bc5744f05a1efadb32b81dedd [2023-08-26 22:27:04,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 22:27:04,258 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 22:27:04,259 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 22:27:04,259 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 22:27:04,261 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 22:27:04,262 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:27:04" (1/1) ... [2023-08-26 22:27:04,263 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a1e6516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:27:04, skipping insertion in model container [2023-08-26 22:27:04,263 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:27:04" (1/1) ... [2023-08-26 22:27:04,297 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 22:27:04,603 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:27:04,617 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 22:27:04,646 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-26 22:27:04,647 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [233] [2023-08-26 22:27:04,673 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:27:04,712 INFO L206 MainTranslator]: Completed translation [2023-08-26 22:27:04,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:27:04 WrapperNode [2023-08-26 22:27:04,713 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 22:27:04,714 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 22:27:04,714 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 22:27:04,714 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 22:27:04,720 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:27:04" (1/1) ... [2023-08-26 22:27:04,748 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:27:04" (1/1) ... [2023-08-26 22:27:04,774 INFO L138 Inliner]: procedures = 165, calls = 25, calls flagged for inlining = 8, calls inlined = 9, statements flattened = 110 [2023-08-26 22:27:04,774 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 22:27:04,775 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 22:27:04,775 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 22:27:04,775 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 22:27:04,783 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:27:04" (1/1) ... [2023-08-26 22:27:04,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:27:04" (1/1) ... [2023-08-26 22:27:04,789 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:27:04" (1/1) ... [2023-08-26 22:27:04,790 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:27:04" (1/1) ... [2023-08-26 22:27:04,804 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:27:04" (1/1) ... [2023-08-26 22:27:04,807 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:27:04" (1/1) ... [2023-08-26 22:27:04,809 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:27:04" (1/1) ... [2023-08-26 22:27:04,810 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:27:04" (1/1) ... [2023-08-26 22:27:04,811 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 22:27:04,812 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 22:27:04,812 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 22:27:04,812 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 22:27:04,813 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:27:04" (1/1) ... [2023-08-26 22:27:04,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:27:04,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:27:04,854 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 22:27:04,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 22:27:04,893 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2023-08-26 22:27:04,893 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2023-08-26 22:27:04,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 22:27:04,893 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 22:27:04,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 22:27:04,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 22:27:04,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 22:27:04,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 22:27:04,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 22:27:04,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 22:27:04,896 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 22:27:05,042 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 22:27:05,045 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 22:27:05,198 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 22:27:05,204 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 22:27:05,205 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-26 22:27:05,207 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:27:05 BoogieIcfgContainer [2023-08-26 22:27:05,207 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 22:27:05,209 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 22:27:05,209 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 22:27:05,211 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 22:27:05,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:27:04" (1/3) ... [2023-08-26 22:27:05,212 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69eff5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:27:05, skipping insertion in model container [2023-08-26 22:27:05,212 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:27:04" (2/3) ... [2023-08-26 22:27:05,212 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69eff5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:27:05, skipping insertion in model container [2023-08-26 22:27:05,212 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:27:05" (3/3) ... [2023-08-26 22:27:05,213 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_69-refine-protected-loop-interval_true.i [2023-08-26 22:27:05,229 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 22:27:05,229 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-26 22:27:05,229 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 22:27:05,291 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 22:27:05,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 126 transitions, 257 flow [2023-08-26 22:27:05,422 INFO L124 PetriNetUnfolderBase]: 12/125 cut-off events. [2023-08-26 22:27:05,422 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:27:05,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 125 events. 12/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 278 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-08-26 22:27:05,433 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 126 transitions, 257 flow [2023-08-26 22:27:05,440 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 125 transitions, 253 flow [2023-08-26 22:27:05,444 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:27:05,462 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 125 transitions, 253 flow [2023-08-26 22:27:05,466 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 125 transitions, 253 flow [2023-08-26 22:27:05,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 125 transitions, 253 flow [2023-08-26 22:27:05,516 INFO L124 PetriNetUnfolderBase]: 12/125 cut-off events. [2023-08-26 22:27:05,517 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:27:05,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 125 events. 12/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 278 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-08-26 22:27:05,521 INFO L119 LiptonReduction]: Number of co-enabled transitions 4144 [2023-08-26 22:27:08,412 INFO L134 LiptonReduction]: Checked pairs total: 7623 [2023-08-26 22:27:08,412 INFO L136 LiptonReduction]: Total number of compositions: 128 [2023-08-26 22:27:08,424 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:27:08,429 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1b3e7399, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:27:08,429 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-26 22:27:08,439 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:27:08,439 INFO L124 PetriNetUnfolderBase]: 3/16 cut-off events. [2023-08-26 22:27:08,439 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:27:08,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:08,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 22:27:08,440 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:27:08,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:08,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1888729532, now seen corresponding path program 1 times [2023-08-26 22:27:08,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:08,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237958948] [2023-08-26 22:27:08,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:08,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:08,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:08,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:08,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237958948] [2023-08-26 22:27:08,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237958948] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:27:08,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:27:08,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:27:08,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029642504] [2023-08-26 22:27:08,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:27:08,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:27:08,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:08,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:27:08,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:27:08,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 254 [2023-08-26 22:27:08,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 34 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:08,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:08,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 254 [2023-08-26 22:27:08,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:27:08,947 INFO L124 PetriNetUnfolderBase]: 199/372 cut-off events. [2023-08-26 22:27:08,947 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:27:08,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 745 conditions, 372 events. 199/372 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1519 event pairs, 109 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 736. Up to 308 conditions per place. [2023-08-26 22:27:08,954 INFO L140 encePairwiseOnDemand]: 243/254 looper letters, 36 selfloop transitions, 3 changer transitions 1/42 dead transitions. [2023-08-26 22:27:08,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 42 transitions, 167 flow [2023-08-26 22:27:08,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:27:08,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:27:08,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2023-08-26 22:27:08,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4645669291338583 [2023-08-26 22:27:08,975 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2023-08-26 22:27:08,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2023-08-26 22:27:08,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:27:08,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2023-08-26 22:27:08,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:08,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:08,990 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:08,992 INFO L175 Difference]: Start difference. First operand has 31 places, 34 transitions, 71 flow. Second operand 3 states and 354 transitions. [2023-08-26 22:27:08,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 42 transitions, 167 flow [2023-08-26 22:27:08,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 42 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:27:08,997 INFO L231 Difference]: Finished difference. Result has 33 places, 33 transitions, 94 flow [2023-08-26 22:27:08,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=33, PETRI_TRANSITIONS=33} [2023-08-26 22:27:09,001 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 2 predicate places. [2023-08-26 22:27:09,002 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 33 transitions, 94 flow [2023-08-26 22:27:09,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:09,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:09,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:27:09,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 22:27:09,003 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:27:09,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:09,011 INFO L85 PathProgramCache]: Analyzing trace with hash 970197093, now seen corresponding path program 1 times [2023-08-26 22:27:09,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:09,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206566125] [2023-08-26 22:27:09,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:09,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:09,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:09,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:09,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206566125] [2023-08-26 22:27:09,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206566125] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:27:09,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:27:09,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:27:09,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424955931] [2023-08-26 22:27:09,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:27:09,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:27:09,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:09,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:27:09,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:27:09,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 254 [2023-08-26 22:27:09,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 33 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:09,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:09,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 254 [2023-08-26 22:27:09,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:27:09,209 INFO L124 PetriNetUnfolderBase]: 192/373 cut-off events. [2023-08-26 22:27:09,209 INFO L125 PetriNetUnfolderBase]: For 64/78 co-relation queries the response was YES. [2023-08-26 22:27:09,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 839 conditions, 373 events. 192/373 cut-off events. For 64/78 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1712 event pairs, 16 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 827. Up to 315 conditions per place. [2023-08-26 22:27:09,211 INFO L140 encePairwiseOnDemand]: 249/254 looper letters, 46 selfloop transitions, 2 changer transitions 1/53 dead transitions. [2023-08-26 22:27:09,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 53 transitions, 244 flow [2023-08-26 22:27:09,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:27:09,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:27:09,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2023-08-26 22:27:09,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4881889763779528 [2023-08-26 22:27:09,215 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2023-08-26 22:27:09,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2023-08-26 22:27:09,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:27:09,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2023-08-26 22:27:09,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:09,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:09,221 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:09,221 INFO L175 Difference]: Start difference. First operand has 33 places, 33 transitions, 94 flow. Second operand 3 states and 372 transitions. [2023-08-26 22:27:09,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 53 transitions, 244 flow [2023-08-26 22:27:09,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 53 transitions, 234 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:27:09,226 INFO L231 Difference]: Finished difference. Result has 34 places, 34 transitions, 104 flow [2023-08-26 22:27:09,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=34, PETRI_TRANSITIONS=34} [2023-08-26 22:27:09,227 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2023-08-26 22:27:09,227 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 34 transitions, 104 flow [2023-08-26 22:27:09,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:09,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:09,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:27:09,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 22:27:09,229 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:27:09,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:09,232 INFO L85 PathProgramCache]: Analyzing trace with hash -888835783, now seen corresponding path program 1 times [2023-08-26 22:27:09,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:09,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248645306] [2023-08-26 22:27:09,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:09,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:09,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:09,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:09,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248645306] [2023-08-26 22:27:09,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248645306] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:27:09,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:27:09,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:27:09,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070599277] [2023-08-26 22:27:09,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:27:09,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:27:09,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:09,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:27:09,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:27:09,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 254 [2023-08-26 22:27:09,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 34 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:09,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:09,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 254 [2023-08-26 22:27:09,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:27:09,450 INFO L124 PetriNetUnfolderBase]: 85/205 cut-off events. [2023-08-26 22:27:09,450 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-08-26 22:27:09,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 205 events. 85/205 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 771 event pairs, 5 based on Foata normal form. 28/174 useless extension candidates. Maximal degree in co-relation 500. Up to 156 conditions per place. [2023-08-26 22:27:09,452 INFO L140 encePairwiseOnDemand]: 249/254 looper letters, 31 selfloop transitions, 5 changer transitions 1/40 dead transitions. [2023-08-26 22:27:09,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 40 transitions, 204 flow [2023-08-26 22:27:09,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:27:09,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:27:09,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2023-08-26 22:27:09,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45144356955380577 [2023-08-26 22:27:09,454 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 344 transitions. [2023-08-26 22:27:09,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 344 transitions. [2023-08-26 22:27:09,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:27:09,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 344 transitions. [2023-08-26 22:27:09,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:09,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:09,457 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:09,457 INFO L175 Difference]: Start difference. First operand has 34 places, 34 transitions, 104 flow. Second operand 3 states and 344 transitions. [2023-08-26 22:27:09,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 40 transitions, 204 flow [2023-08-26 22:27:09,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 40 transitions, 200 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:27:09,459 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 112 flow [2023-08-26 22:27:09,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2023-08-26 22:27:09,461 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2023-08-26 22:27:09,463 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 112 flow [2023-08-26 22:27:09,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:09,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:09,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:27:09,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 22:27:09,465 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:27:09,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:09,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1992817577, now seen corresponding path program 1 times [2023-08-26 22:27:09,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:09,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796070981] [2023-08-26 22:27:09,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:09,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:09,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:09,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:09,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:09,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796070981] [2023-08-26 22:27:09,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796070981] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:27:09,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:27:09,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 22:27:09,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098109012] [2023-08-26 22:27:09,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:27:09,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 22:27:09,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:09,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 22:27:09,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:27:09,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 254 [2023-08-26 22:27:09,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:09,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:09,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 254 [2023-08-26 22:27:09,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:27:09,675 INFO L124 PetriNetUnfolderBase]: 104/236 cut-off events. [2023-08-26 22:27:09,675 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2023-08-26 22:27:09,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 647 conditions, 236 events. 104/236 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 823 event pairs, 42 based on Foata normal form. 6/187 useless extension candidates. Maximal degree in co-relation 635. Up to 112 conditions per place. [2023-08-26 22:27:09,677 INFO L140 encePairwiseOnDemand]: 242/254 looper letters, 39 selfloop transitions, 9 changer transitions 4/54 dead transitions. [2023-08-26 22:27:09,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 54 transitions, 290 flow [2023-08-26 22:27:09,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 22:27:09,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 22:27:09,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 528 transitions. [2023-08-26 22:27:09,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415748031496063 [2023-08-26 22:27:09,679 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 528 transitions. [2023-08-26 22:27:09,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 528 transitions. [2023-08-26 22:27:09,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:27:09,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 528 transitions. [2023-08-26 22:27:09,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 105.6) internal successors, (528), 5 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:09,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:09,683 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:09,683 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 112 flow. Second operand 5 states and 528 transitions. [2023-08-26 22:27:09,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 54 transitions, 290 flow [2023-08-26 22:27:09,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 54 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:27:09,687 INFO L231 Difference]: Finished difference. Result has 39 places, 36 transitions, 166 flow [2023-08-26 22:27:09,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=166, PETRI_PLACES=39, PETRI_TRANSITIONS=36} [2023-08-26 22:27:09,688 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2023-08-26 22:27:09,689 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 166 flow [2023-08-26 22:27:09,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:09,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:09,689 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:27:09,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 22:27:09,689 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:27:09,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:09,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1987677491, now seen corresponding path program 1 times [2023-08-26 22:27:09,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:09,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854790133] [2023-08-26 22:27:09,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:09,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:09,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 22:27:09,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:09,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854790133] [2023-08-26 22:27:09,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854790133] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:27:09,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:27:09,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:27:09,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377792549] [2023-08-26 22:27:09,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:27:09,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:27:09,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:09,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:27:09,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:27:09,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 254 [2023-08-26 22:27:09,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:09,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:09,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 254 [2023-08-26 22:27:09,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:27:09,804 INFO L124 PetriNetUnfolderBase]: 102/232 cut-off events. [2023-08-26 22:27:09,805 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2023-08-26 22:27:09,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 688 conditions, 232 events. 102/232 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 806 event pairs, 42 based on Foata normal form. 4/189 useless extension candidates. Maximal degree in co-relation 671. Up to 153 conditions per place. [2023-08-26 22:27:09,809 INFO L140 encePairwiseOnDemand]: 249/254 looper letters, 34 selfloop transitions, 6 changer transitions 1/43 dead transitions. [2023-08-26 22:27:09,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 43 transitions, 266 flow [2023-08-26 22:27:09,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:27:09,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:27:09,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2023-08-26 22:27:09,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.442257217847769 [2023-08-26 22:27:09,811 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 337 transitions. [2023-08-26 22:27:09,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 337 transitions. [2023-08-26 22:27:09,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:27:09,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 337 transitions. [2023-08-26 22:27:09,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:09,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:09,815 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:09,815 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 166 flow. Second operand 3 states and 337 transitions. [2023-08-26 22:27:09,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 43 transitions, 266 flow [2023-08-26 22:27:09,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 43 transitions, 266 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:27:09,817 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 180 flow [2023-08-26 22:27:09,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2023-08-26 22:27:09,818 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2023-08-26 22:27:09,818 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 180 flow [2023-08-26 22:27:09,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:09,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:09,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:27:09,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 22:27:09,819 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr1ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:27:09,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:09,819 INFO L85 PathProgramCache]: Analyzing trace with hash -705810872, now seen corresponding path program 1 times [2023-08-26 22:27:09,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:09,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122413849] [2023-08-26 22:27:09,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:09,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:09,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:09,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:09,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:09,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122413849] [2023-08-26 22:27:09,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122413849] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:27:09,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:27:09,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:27:09,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331597232] [2023-08-26 22:27:09,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:27:09,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 22:27:09,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:09,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 22:27:09,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 22:27:09,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 254 [2023-08-26 22:27:09,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:09,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:09,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 254 [2023-08-26 22:27:09,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:27:09,987 INFO L124 PetriNetUnfolderBase]: 130/286 cut-off events. [2023-08-26 22:27:09,988 INFO L125 PetriNetUnfolderBase]: For 265/265 co-relation queries the response was YES. [2023-08-26 22:27:09,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 928 conditions, 286 events. 130/286 cut-off events. For 265/265 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1027 event pairs, 22 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 908. Up to 98 conditions per place. [2023-08-26 22:27:09,990 INFO L140 encePairwiseOnDemand]: 245/254 looper letters, 59 selfloop transitions, 15 changer transitions 3/79 dead transitions. [2023-08-26 22:27:09,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 79 transitions, 549 flow [2023-08-26 22:27:09,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 22:27:09,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 22:27:09,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 529 transitions. [2023-08-26 22:27:09,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41653543307086616 [2023-08-26 22:27:09,992 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 529 transitions. [2023-08-26 22:27:09,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 529 transitions. [2023-08-26 22:27:09,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:27:09,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 529 transitions. [2023-08-26 22:27:09,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 105.8) internal successors, (529), 5 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:09,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:09,997 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:09,997 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 180 flow. Second operand 5 states and 529 transitions. [2023-08-26 22:27:09,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 79 transitions, 549 flow [2023-08-26 22:27:09,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 79 transitions, 536 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:27:10,001 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 299 flow [2023-08-26 22:27:10,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=299, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2023-08-26 22:27:10,003 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2023-08-26 22:27:10,003 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 299 flow [2023-08-26 22:27:10,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:10,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:10,004 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:27:10,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 22:27:10,004 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:27:10,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:10,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1488464216, now seen corresponding path program 1 times [2023-08-26 22:27:10,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:10,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145306659] [2023-08-26 22:27:10,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:10,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:10,055 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:10,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:10,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145306659] [2023-08-26 22:27:10,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145306659] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:27:10,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643697845] [2023-08-26 22:27:10,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:10,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:27:10,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:27:10,059 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:27:10,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 22:27:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:10,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 22:27:10,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:27:10,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:10,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:27:10,271 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:10,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643697845] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:27:10,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:27:10,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-26 22:27:10,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117593676] [2023-08-26 22:27:10,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:27:10,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-26 22:27:10,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:10,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-26 22:27:10,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-26 22:27:10,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 254 [2023-08-26 22:27:10,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 299 flow. Second operand has 10 states, 10 states have (on average 97.8) internal successors, (978), 10 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:10,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:10,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 254 [2023-08-26 22:27:10,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:27:10,406 INFO L124 PetriNetUnfolderBase]: 162/357 cut-off events. [2023-08-26 22:27:10,407 INFO L125 PetriNetUnfolderBase]: For 635/635 co-relation queries the response was YES. [2023-08-26 22:27:10,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1254 conditions, 357 events. 162/357 cut-off events. For 635/635 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1355 event pairs, 60 based on Foata normal form. 2/300 useless extension candidates. Maximal degree in co-relation 1233. Up to 172 conditions per place. [2023-08-26 22:27:10,409 INFO L140 encePairwiseOnDemand]: 244/254 looper letters, 56 selfloop transitions, 17 changer transitions 4/79 dead transitions. [2023-08-26 22:27:10,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 79 transitions, 589 flow [2023-08-26 22:27:10,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 22:27:10,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 22:27:10,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 923 transitions. [2023-08-26 22:27:10,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4037620297462817 [2023-08-26 22:27:10,412 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 923 transitions. [2023-08-26 22:27:10,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 923 transitions. [2023-08-26 22:27:10,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:27:10,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 923 transitions. [2023-08-26 22:27:10,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 102.55555555555556) internal successors, (923), 9 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:10,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 254.0) internal successors, (2540), 10 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:10,418 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 254.0) internal successors, (2540), 10 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:10,418 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 299 flow. Second operand 9 states and 923 transitions. [2023-08-26 22:27:10,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 79 transitions, 589 flow [2023-08-26 22:27:10,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 79 transitions, 589 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:27:10,423 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 385 flow [2023-08-26 22:27:10,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=385, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2023-08-26 22:27:10,424 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2023-08-26 22:27:10,424 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 385 flow [2023-08-26 22:27:10,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.8) internal successors, (978), 10 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:10,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:10,424 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:27:10,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-26 22:27:10,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:27:10,629 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:27:10,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:10,630 INFO L85 PathProgramCache]: Analyzing trace with hash -187363738, now seen corresponding path program 1 times [2023-08-26 22:27:10,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:10,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569365040] [2023-08-26 22:27:10,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:10,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:10,673 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:10,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:10,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569365040] [2023-08-26 22:27:10,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569365040] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:27:10,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106689628] [2023-08-26 22:27:10,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:10,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:27:10,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:27:10,675 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:27:10,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 22:27:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:10,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 22:27:10,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:27:10,782 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:10,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:27:10,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:10,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106689628] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:27:10,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:27:10,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 22:27:10,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096671273] [2023-08-26 22:27:10,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:27:10,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 22:27:10,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:10,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 22:27:10,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 22:27:10,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 254 [2023-08-26 22:27:10,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 385 flow. Second operand has 7 states, 7 states have (on average 112.28571428571429) internal successors, (786), 7 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:10,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:10,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 254 [2023-08-26 22:27:10,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:27:10,991 INFO L124 PetriNetUnfolderBase]: 259/557 cut-off events. [2023-08-26 22:27:10,991 INFO L125 PetriNetUnfolderBase]: For 1325/1335 co-relation queries the response was YES. [2023-08-26 22:27:10,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2056 conditions, 557 events. 259/557 cut-off events. For 1325/1335 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2200 event pairs, 12 based on Foata normal form. 4/487 useless extension candidates. Maximal degree in co-relation 2030. Up to 206 conditions per place. [2023-08-26 22:27:10,996 INFO L140 encePairwiseOnDemand]: 249/254 looper letters, 130 selfloop transitions, 12 changer transitions 2/153 dead transitions. [2023-08-26 22:27:10,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 153 transitions, 1400 flow [2023-08-26 22:27:10,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 22:27:10,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 22:27:10,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 858 transitions. [2023-08-26 22:27:10,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48256467941507314 [2023-08-26 22:27:10,999 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 858 transitions. [2023-08-26 22:27:10,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 858 transitions. [2023-08-26 22:27:11,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:27:11,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 858 transitions. [2023-08-26 22:27:11,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 122.57142857142857) internal successors, (858), 7 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:11,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 254.0) internal successors, (2032), 8 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:11,007 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 254.0) internal successors, (2032), 8 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:11,007 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 385 flow. Second operand 7 states and 858 transitions. [2023-08-26 22:27:11,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 153 transitions, 1400 flow [2023-08-26 22:27:11,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 153 transitions, 1379 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-26 22:27:11,014 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 455 flow [2023-08-26 22:27:11,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=455, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2023-08-26 22:27:11,017 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2023-08-26 22:27:11,018 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 455 flow [2023-08-26 22:27:11,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.28571428571429) internal successors, (786), 7 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:11,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:11,018 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:27:11,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 22:27:11,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-08-26 22:27:11,223 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:27:11,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:11,224 INFO L85 PathProgramCache]: Analyzing trace with hash -187363743, now seen corresponding path program 1 times [2023-08-26 22:27:11,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:11,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435481444] [2023-08-26 22:27:11,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:11,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:11,260 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:11,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:11,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435481444] [2023-08-26 22:27:11,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435481444] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:27:11,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:27:11,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:27:11,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704276837] [2023-08-26 22:27:11,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:27:11,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:27:11,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:11,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:27:11,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:27:11,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 254 [2023-08-26 22:27:11,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 455 flow. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:11,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:11,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 254 [2023-08-26 22:27:11,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:27:11,342 INFO L124 PetriNetUnfolderBase]: 194/467 cut-off events. [2023-08-26 22:27:11,342 INFO L125 PetriNetUnfolderBase]: For 1740/1745 co-relation queries the response was YES. [2023-08-26 22:27:11,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2000 conditions, 467 events. 194/467 cut-off events. For 1740/1745 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1887 event pairs, 58 based on Foata normal form. 31/490 useless extension candidates. Maximal degree in co-relation 1971. Up to 320 conditions per place. [2023-08-26 22:27:11,347 INFO L140 encePairwiseOnDemand]: 251/254 looper letters, 52 selfloop transitions, 5 changer transitions 3/69 dead transitions. [2023-08-26 22:27:11,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 69 transitions, 651 flow [2023-08-26 22:27:11,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:27:11,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:27:11,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2023-08-26 22:27:11,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4658792650918635 [2023-08-26 22:27:11,349 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2023-08-26 22:27:11,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2023-08-26 22:27:11,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:27:11,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2023-08-26 22:27:11,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:11,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:11,351 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:11,352 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 455 flow. Second operand 3 states and 355 transitions. [2023-08-26 22:27:11,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 69 transitions, 651 flow [2023-08-26 22:27:11,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 69 transitions, 637 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-26 22:27:11,357 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 424 flow [2023-08-26 22:27:11,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=424, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2023-08-26 22:27:11,358 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 31 predicate places. [2023-08-26 22:27:11,358 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 424 flow [2023-08-26 22:27:11,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:11,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:11,358 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:27:11,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 22:27:11,359 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:27:11,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:11,359 INFO L85 PathProgramCache]: Analyzing trace with hash 865768909, now seen corresponding path program 1 times [2023-08-26 22:27:11,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:11,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740544591] [2023-08-26 22:27:11,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:11,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:11,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:11,444 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:11,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:11,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740544591] [2023-08-26 22:27:11,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740544591] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:27:11,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823815823] [2023-08-26 22:27:11,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:11,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:27:11,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:27:11,446 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:27:11,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 22:27:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:11,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 22:27:11,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:27:11,590 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:11,590 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:27:11,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823815823] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:27:11,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 22:27:11,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2023-08-26 22:27:11,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565025118] [2023-08-26 22:27:11,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:27:11,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 22:27:11,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:11,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 22:27:11,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-08-26 22:27:11,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 254 [2023-08-26 22:27:11,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 424 flow. Second operand has 7 states, 7 states have (on average 97.14285714285714) internal successors, (680), 7 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:11,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:11,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 254 [2023-08-26 22:27:11,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:27:11,753 INFO L124 PetriNetUnfolderBase]: 279/621 cut-off events. [2023-08-26 22:27:11,754 INFO L125 PetriNetUnfolderBase]: For 2012/2012 co-relation queries the response was YES. [2023-08-26 22:27:11,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2635 conditions, 621 events. 279/621 cut-off events. For 2012/2012 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2470 event pairs, 80 based on Foata normal form. 22/643 useless extension candidates. Maximal degree in co-relation 2605. Up to 273 conditions per place. [2023-08-26 22:27:11,759 INFO L140 encePairwiseOnDemand]: 244/254 looper letters, 69 selfloop transitions, 17 changer transitions 10/98 dead transitions. [2023-08-26 22:27:11,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 98 transitions, 877 flow [2023-08-26 22:27:11,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 22:27:11,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 22:27:11,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 819 transitions. [2023-08-26 22:27:11,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4030511811023622 [2023-08-26 22:27:11,762 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 819 transitions. [2023-08-26 22:27:11,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 819 transitions. [2023-08-26 22:27:11,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:27:11,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 819 transitions. [2023-08-26 22:27:11,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 102.375) internal successors, (819), 8 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:11,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 254.0) internal successors, (2286), 9 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:11,769 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 254.0) internal successors, (2286), 9 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:11,769 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 424 flow. Second operand 8 states and 819 transitions. [2023-08-26 22:27:11,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 98 transitions, 877 flow [2023-08-26 22:27:11,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 98 transitions, 841 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-26 22:27:11,777 INFO L231 Difference]: Finished difference. Result has 71 places, 56 transitions, 499 flow [2023-08-26 22:27:11,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=499, PETRI_PLACES=71, PETRI_TRANSITIONS=56} [2023-08-26 22:27:11,778 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2023-08-26 22:27:11,778 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 56 transitions, 499 flow [2023-08-26 22:27:11,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 97.14285714285714) internal successors, (680), 7 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:11,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:11,778 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:27:11,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 22:27:11,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:27:11,985 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:27:11,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:11,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1359737571, now seen corresponding path program 1 times [2023-08-26 22:27:11,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:11,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656115344] [2023-08-26 22:27:11,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:11,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:12,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:12,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:12,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656115344] [2023-08-26 22:27:12,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656115344] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:27:12,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:27:12,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 22:27:12,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555064560] [2023-08-26 22:27:12,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:27:12,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 22:27:12,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:12,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 22:27:12,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-26 22:27:12,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 254 [2023-08-26 22:27:12,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 56 transitions, 499 flow. Second operand has 6 states, 6 states have (on average 97.83333333333333) internal successors, (587), 6 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:12,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:12,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 254 [2023-08-26 22:27:12,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:27:12,254 INFO L124 PetriNetUnfolderBase]: 316/691 cut-off events. [2023-08-26 22:27:12,254 INFO L125 PetriNetUnfolderBase]: For 2880/2880 co-relation queries the response was YES. [2023-08-26 22:27:12,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3122 conditions, 691 events. 316/691 cut-off events. For 2880/2880 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2829 event pairs, 58 based on Foata normal form. 15/705 useless extension candidates. Maximal degree in co-relation 3087. Up to 250 conditions per place. [2023-08-26 22:27:12,260 INFO L140 encePairwiseOnDemand]: 243/254 looper letters, 76 selfloop transitions, 23 changer transitions 10/111 dead transitions. [2023-08-26 22:27:12,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 111 transitions, 1074 flow [2023-08-26 22:27:12,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:27:12,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:27:12,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 629 transitions. [2023-08-26 22:27:12,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41272965879265094 [2023-08-26 22:27:12,262 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 629 transitions. [2023-08-26 22:27:12,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 629 transitions. [2023-08-26 22:27:12,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:27:12,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 629 transitions. [2023-08-26 22:27:12,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 104.83333333333333) internal successors, (629), 6 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:12,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 254.0) internal successors, (1778), 7 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:12,266 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 254.0) internal successors, (1778), 7 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:12,266 INFO L175 Difference]: Start difference. First operand has 71 places, 56 transitions, 499 flow. Second operand 6 states and 629 transitions. [2023-08-26 22:27:12,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 111 transitions, 1074 flow [2023-08-26 22:27:12,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 111 transitions, 1054 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-26 22:27:12,276 INFO L231 Difference]: Finished difference. Result has 76 places, 61 transitions, 627 flow [2023-08-26 22:27:12,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=627, PETRI_PLACES=76, PETRI_TRANSITIONS=61} [2023-08-26 22:27:12,276 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 45 predicate places. [2023-08-26 22:27:12,277 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 61 transitions, 627 flow [2023-08-26 22:27:12,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 97.83333333333333) internal successors, (587), 6 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:12,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:12,277 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:27:12,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 22:27:12,277 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:27:12,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:12,278 INFO L85 PathProgramCache]: Analyzing trace with hash 338911444, now seen corresponding path program 1 times [2023-08-26 22:27:12,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:12,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844703080] [2023-08-26 22:27:12,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:12,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:12,386 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:12,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:12,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844703080] [2023-08-26 22:27:12,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844703080] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:27:12,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:27:12,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-26 22:27:12,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026081169] [2023-08-26 22:27:12,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:27:12,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 22:27:12,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:12,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 22:27:12,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-26 22:27:12,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 254 [2023-08-26 22:27:12,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 61 transitions, 627 flow. Second operand has 7 states, 7 states have (on average 91.71428571428571) internal successors, (642), 7 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:12,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:12,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 254 [2023-08-26 22:27:12,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:27:12,551 INFO L124 PetriNetUnfolderBase]: 281/625 cut-off events. [2023-08-26 22:27:12,552 INFO L125 PetriNetUnfolderBase]: For 3526/3526 co-relation queries the response was YES. [2023-08-26 22:27:12,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3029 conditions, 625 events. 281/625 cut-off events. For 3526/3526 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2457 event pairs, 99 based on Foata normal form. 4/628 useless extension candidates. Maximal degree in co-relation 2990. Up to 427 conditions per place. [2023-08-26 22:27:12,558 INFO L140 encePairwiseOnDemand]: 244/254 looper letters, 69 selfloop transitions, 12 changer transitions 15/98 dead transitions. [2023-08-26 22:27:12,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 98 transitions, 1037 flow [2023-08-26 22:27:12,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 22:27:12,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 22:27:12,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 682 transitions. [2023-08-26 22:27:12,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38357705286839144 [2023-08-26 22:27:12,560 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 682 transitions. [2023-08-26 22:27:12,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 682 transitions. [2023-08-26 22:27:12,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:27:12,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 682 transitions. [2023-08-26 22:27:12,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 97.42857142857143) internal successors, (682), 7 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:12,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 254.0) internal successors, (2032), 8 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:12,565 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 254.0) internal successors, (2032), 8 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:12,565 INFO L175 Difference]: Start difference. First operand has 76 places, 61 transitions, 627 flow. Second operand 7 states and 682 transitions. [2023-08-26 22:27:12,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 98 transitions, 1037 flow [2023-08-26 22:27:12,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 98 transitions, 988 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-08-26 22:27:12,574 INFO L231 Difference]: Finished difference. Result has 81 places, 62 transitions, 640 flow [2023-08-26 22:27:12,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=640, PETRI_PLACES=81, PETRI_TRANSITIONS=62} [2023-08-26 22:27:12,575 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 50 predicate places. [2023-08-26 22:27:12,575 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 62 transitions, 640 flow [2023-08-26 22:27:12,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 91.71428571428571) internal successors, (642), 7 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:12,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:12,576 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:27:12,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 22:27:12,576 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:27:12,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:12,576 INFO L85 PathProgramCache]: Analyzing trace with hash -47330081, now seen corresponding path program 1 times [2023-08-26 22:27:12,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:12,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373522630] [2023-08-26 22:27:12,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:12,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:12,639 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:12,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:12,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373522630] [2023-08-26 22:27:12,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373522630] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:27:12,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:27:12,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-26 22:27:12,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649463205] [2023-08-26 22:27:12,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:27:12,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 22:27:12,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:12,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 22:27:12,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-26 22:27:12,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 254 [2023-08-26 22:27:12,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 62 transitions, 640 flow. Second operand has 6 states, 6 states have (on average 92.66666666666667) internal successors, (556), 6 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:12,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:12,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 254 [2023-08-26 22:27:12,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:27:12,771 INFO L124 PetriNetUnfolderBase]: 239/547 cut-off events. [2023-08-26 22:27:12,771 INFO L125 PetriNetUnfolderBase]: For 3029/3029 co-relation queries the response was YES. [2023-08-26 22:27:12,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2548 conditions, 547 events. 239/547 cut-off events. For 3029/3029 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2156 event pairs, 64 based on Foata normal form. 12/558 useless extension candidates. Maximal degree in co-relation 2506. Up to 303 conditions per place. [2023-08-26 22:27:12,776 INFO L140 encePairwiseOnDemand]: 244/254 looper letters, 54 selfloop transitions, 24 changer transitions 0/80 dead transitions. [2023-08-26 22:27:12,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 80 transitions, 868 flow [2023-08-26 22:27:12,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 22:27:12,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 22:27:12,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 659 transitions. [2023-08-26 22:27:12,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37064116985376827 [2023-08-26 22:27:12,778 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 659 transitions. [2023-08-26 22:27:12,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 659 transitions. [2023-08-26 22:27:12,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:27:12,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 659 transitions. [2023-08-26 22:27:12,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.14285714285714) internal successors, (659), 7 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:12,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 254.0) internal successors, (2032), 8 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:12,783 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 254.0) internal successors, (2032), 8 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:12,783 INFO L175 Difference]: Start difference. First operand has 81 places, 62 transitions, 640 flow. Second operand 7 states and 659 transitions. [2023-08-26 22:27:12,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 80 transitions, 868 flow [2023-08-26 22:27:12,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 80 transitions, 845 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-26 22:27:12,791 INFO L231 Difference]: Finished difference. Result has 80 places, 59 transitions, 613 flow [2023-08-26 22:27:12,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=613, PETRI_PLACES=80, PETRI_TRANSITIONS=59} [2023-08-26 22:27:12,792 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 49 predicate places. [2023-08-26 22:27:12,792 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 59 transitions, 613 flow [2023-08-26 22:27:12,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.66666666666667) internal successors, (556), 6 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:12,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:12,793 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:27:12,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 22:27:12,793 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting workerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:27:12,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:12,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1688241050, now seen corresponding path program 1 times [2023-08-26 22:27:12,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:12,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751077452] [2023-08-26 22:27:12,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:12,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:12,932 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:12,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:12,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751077452] [2023-08-26 22:27:12,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751077452] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:27:12,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282373211] [2023-08-26 22:27:12,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:12,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:27:12,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:27:12,934 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:27:12,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 22:27:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:13,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-26 22:27:13,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:27:13,077 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:13,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:27:13,179 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:13,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282373211] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:27:13,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:27:13,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-26 22:27:13,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965151875] [2023-08-26 22:27:13,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:27:13,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-26 22:27:13,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:13,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-26 22:27:13,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-08-26 22:27:13,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 254 [2023-08-26 22:27:13,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 59 transitions, 613 flow. Second operand has 18 states, 18 states have (on average 97.83333333333333) internal successors, (1761), 18 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:13,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:13,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 254 [2023-08-26 22:27:13,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:27:13,400 INFO L124 PetriNetUnfolderBase]: 299/690 cut-off events. [2023-08-26 22:27:13,400 INFO L125 PetriNetUnfolderBase]: For 3753/3753 co-relation queries the response was YES. [2023-08-26 22:27:13,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3202 conditions, 690 events. 299/690 cut-off events. For 3753/3753 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2925 event pairs, 104 based on Foata normal form. 36/725 useless extension candidates. Maximal degree in co-relation 3161. Up to 252 conditions per place. [2023-08-26 22:27:13,406 INFO L140 encePairwiseOnDemand]: 245/254 looper letters, 69 selfloop transitions, 27 changer transitions 23/121 dead transitions. [2023-08-26 22:27:13,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 121 transitions, 1249 flow [2023-08-26 22:27:13,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 22:27:13,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 22:27:13,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1509 transitions. [2023-08-26 22:27:13,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3960629921259842 [2023-08-26 22:27:13,411 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1509 transitions. [2023-08-26 22:27:13,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1509 transitions. [2023-08-26 22:27:13,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:27:13,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1509 transitions. [2023-08-26 22:27:13,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 100.6) internal successors, (1509), 15 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:13,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 254.0) internal successors, (4064), 16 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:13,421 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 254.0) internal successors, (4064), 16 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:13,422 INFO L175 Difference]: Start difference. First operand has 80 places, 59 transitions, 613 flow. Second operand 15 states and 1509 transitions. [2023-08-26 22:27:13,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 121 transitions, 1249 flow [2023-08-26 22:27:13,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 121 transitions, 1186 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-08-26 22:27:13,435 INFO L231 Difference]: Finished difference. Result has 90 places, 63 transitions, 709 flow [2023-08-26 22:27:13,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=709, PETRI_PLACES=90, PETRI_TRANSITIONS=63} [2023-08-26 22:27:13,436 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 59 predicate places. [2023-08-26 22:27:13,436 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 63 transitions, 709 flow [2023-08-26 22:27:13,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 97.83333333333333) internal successors, (1761), 18 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:13,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:13,437 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2023-08-26 22:27:13,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-26 22:27:13,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:27:13,643 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:27:13,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:13,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1443481500, now seen corresponding path program 2 times [2023-08-26 22:27:13,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:13,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719140494] [2023-08-26 22:27:13,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:13,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:13,723 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:13,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:13,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719140494] [2023-08-26 22:27:13,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719140494] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:27:13,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627893807] [2023-08-26 22:27:13,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 22:27:13,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:27:13,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:27:13,725 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:27:13,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 22:27:13,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 22:27:13,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:27:13,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-26 22:27:13,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:27:13,913 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:13,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:27:14,066 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:14,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627893807] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:27:14,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:27:14,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 10] total 25 [2023-08-26 22:27:14,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235346522] [2023-08-26 22:27:14,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:27:14,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-26 22:27:14,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:14,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-26 22:27:14,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2023-08-26 22:27:14,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 254 [2023-08-26 22:27:14,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 63 transitions, 709 flow. Second operand has 25 states, 25 states have (on average 91.08) internal successors, (2277), 25 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:14,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:14,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 254 [2023-08-26 22:27:14,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:27:14,696 INFO L124 PetriNetUnfolderBase]: 299/812 cut-off events. [2023-08-26 22:27:14,697 INFO L125 PetriNetUnfolderBase]: For 4907/4907 co-relation queries the response was YES. [2023-08-26 22:27:14,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3890 conditions, 812 events. 299/812 cut-off events. For 4907/4907 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3570 event pairs, 59 based on Foata normal form. 41/853 useless extension candidates. Maximal degree in co-relation 3848. Up to 218 conditions per place. [2023-08-26 22:27:14,704 INFO L140 encePairwiseOnDemand]: 244/254 looper letters, 190 selfloop transitions, 66 changer transitions 25/283 dead transitions. [2023-08-26 22:27:14,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 283 transitions, 3247 flow [2023-08-26 22:27:14,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-26 22:27:14,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-26 22:27:14,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 3570 transitions. [2023-08-26 22:27:14,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36987152921674266 [2023-08-26 22:27:14,713 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 3570 transitions. [2023-08-26 22:27:14,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 3570 transitions. [2023-08-26 22:27:14,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:27:14,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 3570 transitions. [2023-08-26 22:27:14,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 93.94736842105263) internal successors, (3570), 38 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:14,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 254.0) internal successors, (9906), 39 states have internal predecessors, (9906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:14,734 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 254.0) internal successors, (9906), 39 states have internal predecessors, (9906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:14,734 INFO L175 Difference]: Start difference. First operand has 90 places, 63 transitions, 709 flow. Second operand 38 states and 3570 transitions. [2023-08-26 22:27:14,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 283 transitions, 3247 flow [2023-08-26 22:27:14,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 283 transitions, 3059 flow, removed 56 selfloop flow, removed 9 redundant places. [2023-08-26 22:27:14,752 INFO L231 Difference]: Finished difference. Result has 128 places, 109 transitions, 1491 flow [2023-08-26 22:27:14,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1491, PETRI_PLACES=128, PETRI_TRANSITIONS=109} [2023-08-26 22:27:14,753 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 97 predicate places. [2023-08-26 22:27:14,753 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 109 transitions, 1491 flow [2023-08-26 22:27:14,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 91.08) internal successors, (2277), 25 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:14,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:14,754 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:27:14,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-26 22:27:14,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-26 22:27:14,960 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:27:14,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:14,961 INFO L85 PathProgramCache]: Analyzing trace with hash 124225520, now seen corresponding path program 1 times [2023-08-26 22:27:14,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:14,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629703910] [2023-08-26 22:27:14,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:14,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:15,142 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:15,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:15,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629703910] [2023-08-26 22:27:15,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629703910] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:27:15,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687507805] [2023-08-26 22:27:15,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:15,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:27:15,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:27:15,144 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:27:15,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-26 22:27:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:15,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 22:27:15,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:27:15,315 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 34 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-08-26 22:27:15,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:27:15,384 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 34 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-08-26 22:27:15,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687507805] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:27:15,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:27:15,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 16 [2023-08-26 22:27:15,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266099339] [2023-08-26 22:27:15,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:27:15,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-26 22:27:15,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:15,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-26 22:27:15,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-08-26 22:27:15,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 254 [2023-08-26 22:27:15,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 109 transitions, 1491 flow. Second operand has 16 states, 16 states have (on average 86.5) internal successors, (1384), 16 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:15,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:15,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 254 [2023-08-26 22:27:15,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:27:16,601 INFO L124 PetriNetUnfolderBase]: 428/1204 cut-off events. [2023-08-26 22:27:16,602 INFO L125 PetriNetUnfolderBase]: For 12863/12863 co-relation queries the response was YES. [2023-08-26 22:27:16,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6585 conditions, 1204 events. 428/1204 cut-off events. For 12863/12863 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5303 event pairs, 59 based on Foata normal form. 89/1293 useless extension candidates. Maximal degree in co-relation 6534. Up to 298 conditions per place. [2023-08-26 22:27:16,618 INFO L140 encePairwiseOnDemand]: 242/254 looper letters, 272 selfloop transitions, 157 changer transitions 13/444 dead transitions. [2023-08-26 22:27:16,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 444 transitions, 5252 flow [2023-08-26 22:27:16,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-08-26 22:27:16,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2023-08-26 22:27:16,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 6034 transitions. [2023-08-26 22:27:16,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34428848567842063 [2023-08-26 22:27:16,634 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 6034 transitions. [2023-08-26 22:27:16,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 6034 transitions. [2023-08-26 22:27:16,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:27:16,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 6034 transitions. [2023-08-26 22:27:16,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 70 states, 69 states have (on average 87.44927536231884) internal successors, (6034), 69 states have internal predecessors, (6034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:16,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 70 states, 70 states have (on average 254.0) internal successors, (17780), 70 states have internal predecessors, (17780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:16,678 INFO L81 ComplementDD]: Finished complementDD. Result has 70 states, 70 states have (on average 254.0) internal successors, (17780), 70 states have internal predecessors, (17780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:16,678 INFO L175 Difference]: Start difference. First operand has 128 places, 109 transitions, 1491 flow. Second operand 69 states and 6034 transitions. [2023-08-26 22:27:16,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 444 transitions, 5252 flow [2023-08-26 22:27:16,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 444 transitions, 5022 flow, removed 67 selfloop flow, removed 15 redundant places. [2023-08-26 22:27:16,714 INFO L231 Difference]: Finished difference. Result has 204 places, 236 transitions, 3352 flow [2023-08-26 22:27:16,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=1315, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=3352, PETRI_PLACES=204, PETRI_TRANSITIONS=236} [2023-08-26 22:27:16,715 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 173 predicate places. [2023-08-26 22:27:16,715 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 236 transitions, 3352 flow [2023-08-26 22:27:16,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 86.5) internal successors, (1384), 16 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:16,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:16,716 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 6, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:27:16,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-26 22:27:16,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-26 22:27:16,922 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:27:16,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:16,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1082849684, now seen corresponding path program 2 times [2023-08-26 22:27:16,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:16,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488848099] [2023-08-26 22:27:16,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:16,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:16,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:17,061 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:17,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:17,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488848099] [2023-08-26 22:27:17,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488848099] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:27:17,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220305202] [2023-08-26 22:27:17,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 22:27:17,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:27:17,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:27:17,064 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:27:17,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-26 22:27:17,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 22:27:17,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:27:17,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-26 22:27:17,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:27:17,301 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 15 proven. 43 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-08-26 22:27:17,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:27:17,473 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 15 proven. 43 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-08-26 22:27:17,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220305202] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:27:17,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:27:17,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 25 [2023-08-26 22:27:17,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344964594] [2023-08-26 22:27:17,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:27:17,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-26 22:27:17,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:17,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-26 22:27:17,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2023-08-26 22:27:17,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 254 [2023-08-26 22:27:17,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 236 transitions, 3352 flow. Second operand has 25 states, 25 states have (on average 85.68) internal successors, (2142), 25 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:17,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:17,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 254 [2023-08-26 22:27:17,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:27:19,711 INFO L124 PetriNetUnfolderBase]: 727/2065 cut-off events. [2023-08-26 22:27:19,712 INFO L125 PetriNetUnfolderBase]: For 56413/56413 co-relation queries the response was YES. [2023-08-26 22:27:19,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14526 conditions, 2065 events. 727/2065 cut-off events. For 56413/56413 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 10319 event pairs, 51 based on Foata normal form. 117/2182 useless extension candidates. Maximal degree in co-relation 14450. Up to 534 conditions per place. [2023-08-26 22:27:19,742 INFO L140 encePairwiseOnDemand]: 243/254 looper letters, 289 selfloop transitions, 390 changer transitions 14/695 dead transitions. [2023-08-26 22:27:19,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 695 transitions, 9982 flow [2023-08-26 22:27:19,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-08-26 22:27:19,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2023-08-26 22:27:19,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 8398 transitions. [2023-08-26 22:27:19,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3408555889276727 [2023-08-26 22:27:19,761 INFO L72 ComplementDD]: Start complementDD. Operand 97 states and 8398 transitions. [2023-08-26 22:27:19,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 8398 transitions. [2023-08-26 22:27:19,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:27:19,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 97 states and 8398 transitions. [2023-08-26 22:27:19,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 98 states, 97 states have (on average 86.57731958762886) internal successors, (8398), 97 states have internal predecessors, (8398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:19,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 98 states, 98 states have (on average 254.0) internal successors, (24892), 98 states have internal predecessors, (24892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:19,816 INFO L81 ComplementDD]: Finished complementDD. Result has 98 states, 98 states have (on average 254.0) internal successors, (24892), 98 states have internal predecessors, (24892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:19,816 INFO L175 Difference]: Start difference. First operand has 204 places, 236 transitions, 3352 flow. Second operand 97 states and 8398 transitions. [2023-08-26 22:27:19,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 695 transitions, 9982 flow [2023-08-26 22:27:19,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 695 transitions, 9325 flow, removed 250 selfloop flow, removed 13 redundant places. [2023-08-26 22:27:19,955 INFO L231 Difference]: Finished difference. Result has 310 places, 435 transitions, 6623 flow [2023-08-26 22:27:19,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=2879, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=97, PETRI_FLOW=6623, PETRI_PLACES=310, PETRI_TRANSITIONS=435} [2023-08-26 22:27:19,956 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 279 predicate places. [2023-08-26 22:27:19,956 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 435 transitions, 6623 flow [2023-08-26 22:27:19,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 85.68) internal successors, (2142), 25 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:19,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:19,957 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 7, 1, 1, 1, 1] [2023-08-26 22:27:19,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-26 22:27:20,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:27:20,164 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:27:20,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:20,164 INFO L85 PathProgramCache]: Analyzing trace with hash 655524174, now seen corresponding path program 2 times [2023-08-26 22:27:20,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:20,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804562033] [2023-08-26 22:27:20,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:20,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:20,303 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:20,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:20,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804562033] [2023-08-26 22:27:20,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804562033] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:27:20,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928812343] [2023-08-26 22:27:20,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 22:27:20,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:27:20,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:27:20,305 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:27:20,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-26 22:27:20,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 22:27:20,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:27:20,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-26 22:27:20,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:27:20,502 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:20,502 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:27:20,640 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:20,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928812343] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:27:20,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:27:20,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-08-26 22:27:20,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716503117] [2023-08-26 22:27:20,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:27:20,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-26 22:27:20,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:20,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-26 22:27:20,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2023-08-26 22:27:20,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 254 [2023-08-26 22:27:20,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 435 transitions, 6623 flow. Second operand has 19 states, 19 states have (on average 112.73684210526316) internal successors, (2142), 19 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:20,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:20,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 254 [2023-08-26 22:27:20,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:27:22,491 INFO L124 PetriNetUnfolderBase]: 1574/4903 cut-off events. [2023-08-26 22:27:22,491 INFO L125 PetriNetUnfolderBase]: For 552057/552066 co-relation queries the response was YES. [2023-08-26 22:27:22,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46813 conditions, 4903 events. 1574/4903 cut-off events. For 552057/552066 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 27581 event pairs, 107 based on Foata normal form. 755/5658 useless extension candidates. Maximal degree in co-relation 46718. Up to 1198 conditions per place. [2023-08-26 22:27:22,561 INFO L140 encePairwiseOnDemand]: 251/254 looper letters, 920 selfloop transitions, 116 changer transitions 18/1068 dead transitions. [2023-08-26 22:27:22,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 1068 transitions, 18740 flow [2023-08-26 22:27:22,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-26 22:27:22,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-26 22:27:22,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2166 transitions. [2023-08-26 22:27:22,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.473753280839895 [2023-08-26 22:27:22,565 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2166 transitions. [2023-08-26 22:27:22,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2166 transitions. [2023-08-26 22:27:22,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:27:22,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2166 transitions. [2023-08-26 22:27:22,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 120.33333333333333) internal successors, (2166), 18 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:22,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 254.0) internal successors, (4826), 19 states have internal predecessors, (4826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:22,572 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 254.0) internal successors, (4826), 19 states have internal predecessors, (4826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:22,572 INFO L175 Difference]: Start difference. First operand has 310 places, 435 transitions, 6623 flow. Second operand 18 states and 2166 transitions. [2023-08-26 22:27:22,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 1068 transitions, 18740 flow [2023-08-26 22:27:22,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 1068 transitions, 17774 flow, removed 257 selfloop flow, removed 22 redundant places. [2023-08-26 22:27:22,887 INFO L231 Difference]: Finished difference. Result has 313 places, 444 transitions, 6769 flow [2023-08-26 22:27:22,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=6076, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6769, PETRI_PLACES=313, PETRI_TRANSITIONS=444} [2023-08-26 22:27:22,888 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 282 predicate places. [2023-08-26 22:27:22,888 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 444 transitions, 6769 flow [2023-08-26 22:27:22,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 112.73684210526316) internal successors, (2142), 19 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:22,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:22,889 INFO L208 CegarLoopForPetriNet]: trace histogram [17, 17, 16, 12, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:27:22,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-26 22:27:23,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-26 22:27:23,095 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:27:23,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:23,096 INFO L85 PathProgramCache]: Analyzing trace with hash -310687950, now seen corresponding path program 3 times [2023-08-26 22:27:23,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:23,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961274090] [2023-08-26 22:27:23,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:23,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:23,656 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 564 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:23,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:23,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961274090] [2023-08-26 22:27:23,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961274090] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:27:23,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911269374] [2023-08-26 22:27:23,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 22:27:23,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:27:23,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:27:23,659 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:27:23,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-26 22:27:23,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-08-26 22:27:23,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:27:23,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-26 22:27:23,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:27:24,077 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 32 proven. 262 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-08-26 22:27:24,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:27:24,338 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 32 proven. 262 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-08-26 22:27:24,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911269374] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:27:24,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:27:24,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 11] total 39 [2023-08-26 22:27:24,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252168211] [2023-08-26 22:27:24,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:27:24,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-08-26 22:27:24,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:24,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-08-26 22:27:24,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=1197, Unknown=0, NotChecked=0, Total=1482 [2023-08-26 22:27:24,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 254 [2023-08-26 22:27:24,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 444 transitions, 6769 flow. Second operand has 39 states, 39 states have (on average 85.53846153846153) internal successors, (3336), 39 states have internal predecessors, (3336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:24,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:24,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 254 [2023-08-26 22:27:24,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:27:36,253 INFO L124 PetriNetUnfolderBase]: 2694/7989 cut-off events. [2023-08-26 22:27:36,253 INFO L125 PetriNetUnfolderBase]: For 694318/694318 co-relation queries the response was YES. [2023-08-26 22:27:36,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81217 conditions, 7989 events. 2694/7989 cut-off events. For 694318/694318 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 48754 event pairs, 80 based on Foata normal form. 201/8190 useless extension candidates. Maximal degree in co-relation 81117. Up to 2071 conditions per place. [2023-08-26 22:27:36,347 INFO L140 encePairwiseOnDemand]: 243/254 looper letters, 1420 selfloop transitions, 1312 changer transitions 108/2842 dead transitions. [2023-08-26 22:27:36,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 725 places, 2842 transitions, 48651 flow [2023-08-26 22:27:36,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 413 states. [2023-08-26 22:27:36,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2023-08-26 22:27:36,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 35933 transitions. [2023-08-26 22:27:36,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3425387504528036 [2023-08-26 22:27:36,388 INFO L72 ComplementDD]: Start complementDD. Operand 413 states and 35933 transitions. [2023-08-26 22:27:36,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 413 states and 35933 transitions. [2023-08-26 22:27:36,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:27:36,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 413 states and 35933 transitions. [2023-08-26 22:27:36,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 414 states, 413 states have (on average 87.00484261501211) internal successors, (35933), 413 states have internal predecessors, (35933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:36,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 414 states, 414 states have (on average 254.0) internal successors, (105156), 414 states have internal predecessors, (105156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:36,555 INFO L81 ComplementDD]: Finished complementDD. Result has 414 states, 414 states have (on average 254.0) internal successors, (105156), 414 states have internal predecessors, (105156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:36,556 INFO L175 Difference]: Start difference. First operand has 313 places, 444 transitions, 6769 flow. Second operand 413 states and 35933 transitions. [2023-08-26 22:27:36,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 725 places, 2842 transitions, 48651 flow [2023-08-26 22:27:37,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 716 places, 2842 transitions, 43453 flow, removed 2142 selfloop flow, removed 9 redundant places. [2023-08-26 22:27:37,250 INFO L231 Difference]: Finished difference. Result has 845 places, 1424 transitions, 27731 flow [2023-08-26 22:27:37,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=6197, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=364, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=413, PETRI_FLOW=27731, PETRI_PLACES=845, PETRI_TRANSITIONS=1424} [2023-08-26 22:27:37,251 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 814 predicate places. [2023-08-26 22:27:37,251 INFO L495 AbstractCegarLoop]: Abstraction has has 845 places, 1424 transitions, 27731 flow [2023-08-26 22:27:37,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 85.53846153846153) internal successors, (3336), 39 states have internal predecessors, (3336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:37,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:37,252 INFO L208 CegarLoopForPetriNet]: trace histogram [18, 18, 17, 9, 9, 9, 9, 1, 1, 1, 1] [2023-08-26 22:27:37,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-26 22:27:37,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:27:37,458 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:27:37,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:37,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1235419256, now seen corresponding path program 3 times [2023-08-26 22:27:37,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:37,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856461973] [2023-08-26 22:27:37,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:37,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:37,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:37,980 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 684 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:37,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:37,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856461973] [2023-08-26 22:27:37,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856461973] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:27:37,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295566706] [2023-08-26 22:27:37,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 22:27:37,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:27:37,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:27:37,982 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:27:37,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-26 22:27:38,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-08-26 22:27:38,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:27:38,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-26 22:27:38,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:27:38,568 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 34 proven. 506 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-08-26 22:27:38,568 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:27:39,050 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 34 proven. 506 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-08-26 22:27:39,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295566706] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:27:39,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:27:39,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 20] total 58 [2023-08-26 22:27:39,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837844971] [2023-08-26 22:27:39,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:27:39,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-08-26 22:27:39,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:39,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-08-26 22:27:39,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=609, Invalid=2697, Unknown=0, NotChecked=0, Total=3306 [2023-08-26 22:27:39,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 254 [2023-08-26 22:27:39,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 845 places, 1424 transitions, 27731 flow. Second operand has 58 states, 58 states have (on average 91.06896551724138) internal successors, (5282), 58 states have internal predecessors, (5282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:39,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:39,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 254 [2023-08-26 22:27:39,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:27:46,570 INFO L124 PetriNetUnfolderBase]: 2759/8409 cut-off events. [2023-08-26 22:27:46,570 INFO L125 PetriNetUnfolderBase]: For 918030/918030 co-relation queries the response was YES. [2023-08-26 22:27:46,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87625 conditions, 8409 events. 2759/8409 cut-off events. For 918030/918030 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 51747 event pairs, 120 based on Foata normal form. 149/8558 useless extension candidates. Maximal degree in co-relation 87396. Up to 2221 conditions per place. [2023-08-26 22:27:46,753 INFO L140 encePairwiseOnDemand]: 244/254 looper letters, 1245 selfloop transitions, 822 changer transitions 65/2134 dead transitions. [2023-08-26 22:27:46,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 947 places, 2134 transitions, 45744 flow [2023-08-26 22:27:46,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2023-08-26 22:27:46,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2023-08-26 22:27:46,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 9674 transitions. [2023-08-26 22:27:46,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697729531381393 [2023-08-26 22:27:46,886 INFO L72 ComplementDD]: Start complementDD. Operand 103 states and 9674 transitions. [2023-08-26 22:27:46,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 103 states and 9674 transitions. [2023-08-26 22:27:46,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:27:46,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 103 states and 9674 transitions. [2023-08-26 22:27:46,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 104 states, 103 states have (on average 93.92233009708738) internal successors, (9674), 103 states have internal predecessors, (9674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:46,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 104 states, 104 states have (on average 254.0) internal successors, (26416), 104 states have internal predecessors, (26416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:46,927 INFO L81 ComplementDD]: Finished complementDD. Result has 104 states, 104 states have (on average 254.0) internal successors, (26416), 104 states have internal predecessors, (26416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:46,927 INFO L175 Difference]: Start difference. First operand has 845 places, 1424 transitions, 27731 flow. Second operand 103 states and 9674 transitions. [2023-08-26 22:27:46,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 947 places, 2134 transitions, 45744 flow [2023-08-26 22:27:51,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 885 places, 2134 transitions, 40761 flow, removed 1868 selfloop flow, removed 62 redundant places. [2023-08-26 22:27:51,248 INFO L231 Difference]: Finished difference. Result has 908 places, 1585 transitions, 29401 flow [2023-08-26 22:27:51,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=22900, PETRI_DIFFERENCE_MINUEND_PLACES=783, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=667, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=740, PETRI_DIFFERENCE_SUBTRAHEND_STATES=103, PETRI_FLOW=29401, PETRI_PLACES=908, PETRI_TRANSITIONS=1585} [2023-08-26 22:27:51,250 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 877 predicate places. [2023-08-26 22:27:51,250 INFO L495 AbstractCegarLoop]: Abstraction has has 908 places, 1585 transitions, 29401 flow [2023-08-26 22:27:51,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 91.06896551724138) internal successors, (5282), 58 states have internal predecessors, (5282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:51,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:51,251 INFO L208 CegarLoopForPetriNet]: trace histogram [19, 19, 18, 12, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:27:51,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-26 22:27:51,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:27:51,452 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:27:51,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:51,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1039744554, now seen corresponding path program 4 times [2023-08-26 22:27:51,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:51,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815663991] [2023-08-26 22:27:51,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:51,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:51,914 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 0 proven. 726 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:51,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:51,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815663991] [2023-08-26 22:27:51,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815663991] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:27:51,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405455766] [2023-08-26 22:27:51,915 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 22:27:51,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:27:51,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:27:51,917 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:27:51,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-26 22:27:52,123 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 22:27:52,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:27:52,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-26 22:27:52,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:27:52,397 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 344 proven. 134 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-08-26 22:27:52,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:27:52,733 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 344 proven. 134 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-08-26 22:27:52,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405455766] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:27:52,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:27:52,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 49 [2023-08-26 22:27:52,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116526670] [2023-08-26 22:27:52,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:27:52,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-26 22:27:52,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:52,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-26 22:27:52,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=1928, Unknown=0, NotChecked=0, Total=2352 [2023-08-26 22:27:52,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 254 [2023-08-26 22:27:52,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 908 places, 1585 transitions, 29401 flow. Second operand has 49 states, 49 states have (on average 85.44897959183673) internal successors, (4187), 49 states have internal predecessors, (4187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:52,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:52,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 254 [2023-08-26 22:27:52,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:28:16,974 INFO L124 PetriNetUnfolderBase]: 4427/13686 cut-off events. [2023-08-26 22:28:16,974 INFO L125 PetriNetUnfolderBase]: For 2050858/2050858 co-relation queries the response was YES. [2023-08-26 22:28:17,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144687 conditions, 13686 events. 4427/13686 cut-off events. For 2050858/2050858 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 96319 event pairs, 145 based on Foata normal form. 318/14004 useless extension candidates. Maximal degree in co-relation 144433. Up to 3598 conditions per place. [2023-08-26 22:28:17,435 INFO L140 encePairwiseOnDemand]: 243/254 looper letters, 1942 selfloop transitions, 2549 changer transitions 13/4506 dead transitions. [2023-08-26 22:28:17,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1431 places, 4506 transitions, 95204 flow [2023-08-26 22:28:17,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 535 states. [2023-08-26 22:28:17,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 535 states. [2023-08-26 22:28:17,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 46511 transitions. [2023-08-26 22:28:17,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34226948266980645 [2023-08-26 22:28:17,480 INFO L72 ComplementDD]: Start complementDD. Operand 535 states and 46511 transitions. [2023-08-26 22:28:17,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 535 states and 46511 transitions. [2023-08-26 22:28:17,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:28:17,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 535 states and 46511 transitions. [2023-08-26 22:28:17,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 536 states, 535 states have (on average 86.93644859813084) internal successors, (46511), 535 states have internal predecessors, (46511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:28:17,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 536 states, 536 states have (on average 254.0) internal successors, (136144), 536 states have internal predecessors, (136144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:28:17,676 INFO L81 ComplementDD]: Finished complementDD. Result has 536 states, 536 states have (on average 254.0) internal successors, (136144), 536 states have internal predecessors, (136144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:28:17,676 INFO L175 Difference]: Start difference. First operand has 908 places, 1585 transitions, 29401 flow. Second operand 535 states and 46511 transitions. [2023-08-26 22:28:17,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1431 places, 4506 transitions, 95204 flow [2023-08-26 22:28:26,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1398 places, 4506 transitions, 90436 flow, removed 2210 selfloop flow, removed 33 redundant places. [2023-08-26 22:28:27,073 INFO L231 Difference]: Finished difference. Result has 1583 places, 2789 transitions, 63687 flow [2023-08-26 22:28:27,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=27786, PETRI_DIFFERENCE_MINUEND_PLACES=864, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1370, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=535, PETRI_FLOW=63687, PETRI_PLACES=1583, PETRI_TRANSITIONS=2789} [2023-08-26 22:28:27,075 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1552 predicate places. [2023-08-26 22:28:27,075 INFO L495 AbstractCegarLoop]: Abstraction has has 1583 places, 2789 transitions, 63687 flow [2023-08-26 22:28:27,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 85.44897959183673) internal successors, (4187), 49 states have internal predecessors, (4187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:28:27,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:28:27,076 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 19, 11, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:28:27,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-26 22:28:27,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-26 22:28:27,277 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:28:27,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:28:27,278 INFO L85 PathProgramCache]: Analyzing trace with hash 57868260, now seen corresponding path program 5 times [2023-08-26 22:28:27,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:28:27,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319554763] [2023-08-26 22:28:27,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:28:27,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:28:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:28:27,780 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:28:27,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:28:27,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319554763] [2023-08-26 22:28:27,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319554763] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:28:27,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186403573] [2023-08-26 22:28:27,781 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 22:28:27,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:28:27,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:28:27,782 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:28:27,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-26 22:28:28,008 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-08-26 22:28:28,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:28:28,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-26 22:28:28,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:28:28,368 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 390 proven. 296 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-08-26 22:28:28,369 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:28:28,798 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 390 proven. 296 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-08-26 22:28:28,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186403573] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:28:28,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:28:28,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 19] total 58 [2023-08-26 22:28:28,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472037137] [2023-08-26 22:28:28,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:28:28,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-08-26 22:28:28,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:28:28,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-08-26 22:28:28,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=577, Invalid=2729, Unknown=0, NotChecked=0, Total=3306 [2023-08-26 22:28:28,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 254 [2023-08-26 22:28:28,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1583 places, 2789 transitions, 63687 flow. Second operand has 58 states, 58 states have (on average 85.41379310344827) internal successors, (4954), 58 states have internal predecessors, (4954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:28:28,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:28:28,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 254 [2023-08-26 22:28:28,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:29:22,294 INFO L124 PetriNetUnfolderBase]: 6362/19735 cut-off events. [2023-08-26 22:29:22,294 INFO L125 PetriNetUnfolderBase]: For 8050270/8050270 co-relation queries the response was YES. [2023-08-26 22:29:24,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289641 conditions, 19735 events. 6362/19735 cut-off events. For 8050270/8050270 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 152576 event pairs, 217 based on Foata normal form. 442/20177 useless extension candidates. Maximal degree in co-relation 289203. Up to 5179 conditions per place. [2023-08-26 22:29:24,389 INFO L140 encePairwiseOnDemand]: 243/254 looper letters, 2418 selfloop transitions, 3899 changer transitions 15/6334 dead transitions. [2023-08-26 22:29:24,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2264 places, 6334 transitions, 178296 flow [2023-08-26 22:29:24,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 683 states. [2023-08-26 22:29:24,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2023-08-26 22:29:24,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 59322 transitions. [2023-08-26 22:29:24,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34194902064767524 [2023-08-26 22:29:24,457 INFO L72 ComplementDD]: Start complementDD. Operand 683 states and 59322 transitions. [2023-08-26 22:29:24,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 683 states and 59322 transitions. [2023-08-26 22:29:24,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:29:24,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 683 states and 59322 transitions. [2023-08-26 22:29:24,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 684 states, 683 states have (on average 86.85505124450951) internal successors, (59322), 683 states have internal predecessors, (59322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:29:24,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 684 states, 684 states have (on average 254.0) internal successors, (173736), 684 states have internal predecessors, (173736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:29:24,722 INFO L81 ComplementDD]: Finished complementDD. Result has 684 states, 684 states have (on average 254.0) internal successors, (173736), 684 states have internal predecessors, (173736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:29:24,722 INFO L175 Difference]: Start difference. First operand has 1583 places, 2789 transitions, 63687 flow. Second operand 683 states and 59322 transitions. [2023-08-26 22:29:24,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2264 places, 6334 transitions, 178296 flow [2023-08-26 22:30:26,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2236 places, 6334 transitions, 164707 flow, removed 6677 selfloop flow, removed 28 redundant places. [2023-08-26 22:30:26,971 INFO L231 Difference]: Finished difference. Result has 2434 places, 4170 transitions, 116563 flow [2023-08-26 22:30:26,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=55709, PETRI_DIFFERENCE_MINUEND_PLACES=1554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2789, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2562, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=683, PETRI_FLOW=116563, PETRI_PLACES=2434, PETRI_TRANSITIONS=4170} [2023-08-26 22:30:26,975 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 2403 predicate places. [2023-08-26 22:30:26,975 INFO L495 AbstractCegarLoop]: Abstraction has has 2434 places, 4170 transitions, 116563 flow [2023-08-26 22:30:26,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 85.41379310344827) internal successors, (4954), 58 states have internal predecessors, (4954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:30:26,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:30:26,976 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 21, 20, 14, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:30:26,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-26 22:30:27,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-26 22:30:27,181 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:30:27,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:30:27,182 INFO L85 PathProgramCache]: Analyzing trace with hash 973242582, now seen corresponding path program 6 times [2023-08-26 22:30:27,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:30:27,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273920899] [2023-08-26 22:30:27,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:30:27,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:30:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:30:27,712 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 0 proven. 889 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:30:27,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:30:27,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273920899] [2023-08-26 22:30:27,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273920899] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:30:27,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034392285] [2023-08-26 22:30:27,713 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 22:30:27,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:30:27,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:30:27,714 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:30:27,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-26 22:30:27,996 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2023-08-26 22:30:27,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:30:27,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-26 22:30:28,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:30:28,248 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 40 proven. 447 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-08-26 22:30:28,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:30:28,570 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 40 proven. 447 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-08-26 22:30:28,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034392285] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:30:28,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:30:28,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 14, 14] total 49 [2023-08-26 22:30:28,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158910882] [2023-08-26 22:30:28,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:30:28,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-26 22:30:28,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:30:28,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-26 22:30:28,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=1930, Unknown=0, NotChecked=0, Total=2352 [2023-08-26 22:30:28,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 254 [2023-08-26 22:30:28,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2434 places, 4170 transitions, 116563 flow. Second operand has 49 states, 49 states have (on average 85.77551020408163) internal successors, (4203), 49 states have internal predecessors, (4203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:30:28,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:30:28,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 254 [2023-08-26 22:30:28,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:32:48,818 INFO L124 PetriNetUnfolderBase]: 13605/41919 cut-off events. [2023-08-26 22:32:48,819 INFO L125 PetriNetUnfolderBase]: For 39085890/39085890 co-relation queries the response was YES. [2023-08-26 22:32:57,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 846504 conditions, 41919 events. 13605/41919 cut-off events. For 39085890/39085890 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 379092 event pairs, 396 based on Foata normal form. 793/42712 useless extension candidates. Maximal degree in co-relation 845869. Up to 11108 conditions per place. [2023-08-26 22:32:57,623 INFO L140 encePairwiseOnDemand]: 243/254 looper letters, 2738 selfloop transitions, 7787 changer transitions 29/10556 dead transitions. [2023-08-26 22:32:57,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2900 places, 10556 transitions, 371914 flow [2023-08-26 22:32:57,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 468 states. [2023-08-26 22:32:57,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2023-08-26 22:32:57,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 40637 transitions. [2023-08-26 22:32:57,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3418551046503802 [2023-08-26 22:32:57,689 INFO L72 ComplementDD]: Start complementDD. Operand 468 states and 40637 transitions. [2023-08-26 22:32:57,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 468 states and 40637 transitions. [2023-08-26 22:32:57,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:32:57,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 468 states and 40637 transitions. [2023-08-26 22:32:57,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 469 states, 468 states have (on average 86.83119658119658) internal successors, (40637), 468 states have internal predecessors, (40637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:32:57,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 469 states, 469 states have (on average 254.0) internal successors, (119126), 469 states have internal predecessors, (119126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:32:57,938 INFO L81 ComplementDD]: Finished complementDD. Result has 469 states, 469 states have (on average 254.0) internal successors, (119126), 469 states have internal predecessors, (119126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:32:57,938 INFO L175 Difference]: Start difference. First operand has 2434 places, 4170 transitions, 116563 flow. Second operand 468 states and 40637 transitions. [2023-08-26 22:32:57,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2900 places, 10556 transitions, 371914 flow Received shutdown request... [2023-08-26 22:40:08,345 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2023-08-26 22:40:08,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-26 22:40:08,388 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-26 22:40:08,388 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-26 22:40:08,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-26 22:40:08,546 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-08-26 22:40:08,548 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-08-26 22:40:08,548 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-08-26 22:40:08,548 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-08-26 22:40:08,548 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 13 remaining) [2023-08-26 22:40:08,548 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr0ASSERT_VIOLATIONASSERT (7 of 13 remaining) [2023-08-26 22:40:08,548 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr1ASSERT_VIOLATIONASSERT (6 of 13 remaining) [2023-08-26 22:40:08,548 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-08-26 22:40:08,548 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-08-26 22:40:08,548 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr0ASSERT_VIOLATIONASSERT (3 of 13 remaining) [2023-08-26 22:40:08,549 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr1ASSERT_VIOLATIONASSERT (2 of 13 remaining) [2023-08-26 22:40:08,549 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-08-26 22:40:08,549 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-08-26 22:40:08,549 INFO L445 BasicCegarLoop]: Path program histogram: [6, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:40:08,553 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 22:40:08,554 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 22:40:08,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 10:40:08 BasicIcfg [2023-08-26 22:40:08,556 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 22:40:08,556 INFO L158 Benchmark]: Toolchain (without parser) took 784298.48ms. Allocated memory was 383.8MB in the beginning and 8.5GB in the end (delta: 8.1GB). Free memory was 358.1MB in the beginning and 1.2GB in the end (delta: -804.6MB). Peak memory consumption was 7.6GB. Max. memory is 16.0GB. [2023-08-26 22:40:08,556 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 383.8MB. Free memory was 361.5MB in the beginning and 361.4MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 22:40:08,557 INFO L158 Benchmark]: CACSL2BoogieTranslator took 454.23ms. Allocated memory is still 383.8MB. Free memory was 358.1MB in the beginning and 338.4MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 22:40:08,557 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.20ms. Allocated memory is still 383.8MB. Free memory was 338.4MB in the beginning and 336.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 22:40:08,557 INFO L158 Benchmark]: Boogie Preprocessor took 36.28ms. Allocated memory is still 383.8MB. Free memory was 336.3MB in the beginning and 334.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 22:40:08,557 INFO L158 Benchmark]: RCFGBuilder took 394.80ms. Allocated memory is still 383.8MB. Free memory was 334.2MB in the beginning and 319.3MB in the end (delta: 14.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-26 22:40:08,558 INFO L158 Benchmark]: TraceAbstraction took 783347.21ms. Allocated memory was 383.8MB in the beginning and 8.5GB in the end (delta: 8.1GB). Free memory was 318.3MB in the beginning and 1.2GB in the end (delta: -844.4MB). Peak memory consumption was 7.5GB. Max. memory is 16.0GB. [2023-08-26 22:40:08,559 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 383.8MB. Free memory was 361.5MB in the beginning and 361.4MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 454.23ms. Allocated memory is still 383.8MB. Free memory was 358.1MB in the beginning and 338.4MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 60.20ms. Allocated memory is still 383.8MB. Free memory was 338.4MB in the beginning and 336.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 36.28ms. Allocated memory is still 383.8MB. Free memory was 336.3MB in the beginning and 334.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 394.80ms. Allocated memory is still 383.8MB. Free memory was 334.2MB in the beginning and 319.3MB in the end (delta: 14.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 783347.21ms. Allocated memory was 383.8MB in the beginning and 8.5GB in the end (delta: 8.1GB). Free memory was 318.3MB in the beginning and 1.2GB in the end (delta: -844.4MB). Peak memory consumption was 7.5GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] - GenericResultAtLocation [Line: 233]: Unsoundness Warning unspecified type, defaulting to int C: short [233] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.9s, 117 PlacesBefore, 31 PlacesAfterwards, 125 TransitionsBefore, 34 TransitionsAfterwards, 4144 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 73 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 20 ConcurrentYvCompositions, 5 ChoiceCompositions, 128 TotalNumberOfCompositions, 7623 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5230, independent: 5017, independent conditional: 0, independent unconditional: 5017, dependent: 213, dependent conditional: 0, dependent unconditional: 213, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2379, independent: 2330, independent conditional: 0, independent unconditional: 2330, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5230, independent: 2687, independent conditional: 0, independent unconditional: 2687, dependent: 164, dependent conditional: 0, dependent unconditional: 164, unknown: 2379, unknown conditional: 0, unknown unconditional: 2379] , Statistics on independence cache: Total cache size (in pairs): 176, Positive cache size: 158, Positive conditional cache size: 0, Positive unconditional cache size: 158, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 744]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 711]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 711]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 744]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 743]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 18]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 18]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 724]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 724]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 164 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 783.2s, OverallIterations: 23, TraceHistogramMax: 21, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 766.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10724 SdHoareTripleChecker+Valid, 10.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10724 mSDsluCounter, 104 SdHoareTripleChecker+Invalid, 8.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 97 mSDsCounter, 257 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13120 IncrementalHoareTripleChecker+Invalid, 13377 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 257 mSolverCounterUnsat, 7 mSDtfsCounter, 13120 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3894 GetRequests, 1258 SyntacticMatches, 0 SemanticMatches, 2636 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630730 ImplicationChecksByTransitivity, 51.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=116563occurred in iteration=22, InterpolantAutomatonStates: 2040, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 1635 NumberOfCodeBlocks, 1611 NumberOfCodeBlocksAsserted, 81 NumberOfCheckSat, 2315 ConstructedInterpolants, 0 QuantifiedInterpolants, 6363 SizeOfPredicates, 59 NumberOfNonLiveVariables, 4287 ConjunctsInSsa, 155 ConjunctsInUnsatCore, 48 InterpolantComputations, 11 PerfectInterpolantSequences, 4359/12312 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown